[edk2-devel] [PATCH V10 2/4] OvmfPkg: Clear WORK_AREA_GUEST_TYPE in Main.asm

[Gerd Hoffmann]

On Thu, Oct 21, 2021 at 08:17:32AM +0800, Min Xu wrote:
> RFC： https://bugzilla.tianocore.org/show_bug.cgi?id=3429
> 
> Previously WORK_AREA_GUEST_TYPE was cleared in SetCr3ForPageTables64.
> This is workable for Legacy guest and SEV guest. But it doesn't work
> after Intel TDX is introduced. It is because all TDX CPUs (BSP and APs)
> start to run from 0xfffffff0, thus WORK_AREA_GUEST_TYPE will be cleared
> multi-times if it is TDX guest. So the clearance of WORK_AREA_GUEST_TYPE
> is moved to Main16 entry point in Main.asm.
> Note: WORK_AREA_GUEST_TYPE is only defined for ARCH_X64.
> 
> For Intel TDX, its corresponding entry point is Main32 (which will be
> introduced in next commit in this patch-set). WORK_AREA_GUEST_TYPE will
> be cleared there.

Acked-by: Gerd Hoffmann <kraxel at redhat.com>



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